M5.5 earthquake 63 km E of Mutsu, Japan
A magnitude 5.5 earthquake struck 63 km E of Mutsu, Japan on Sat, Aug 1, 2026, 11:48 AM JST (02:48 UTC), 75 km (47 mi) below the surface.
A larger quake followed: M6.0 32 km SSW of Honchō, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mww), moderate
- Local time
- UTC
- 2026-08-01 02:48:00 UTC
- Depth
- 74.9 km (46.5 mi), intermediate-depth
- Epicenter
- 41.332° N, 141.970° E
- Region
- Japan
- Felt reports
- 7
- Strongest shaking
- IV, light shaking
- PAGER alert
- Green
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- IV, light shaking
- Peak ground acceleration
- 5.7% of gravity
- Peak ground velocity
- 2.8 cm/s
- Map
- Automatic
Did you feel it?
7 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.
Estimated impact
The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.
- Alert level
- Green: little or no damage or loss of life expected
| Range | Chance |
|---|---|
| Under 1 | 90% |
| 1 to 10 | 9% |
| 10 to 100 | Under 1% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
| Range, million USD | Chance |
|---|---|
| Under 1 | 90% |
| 1 to 10 | 9% |
| 10 to 100 | Under 1% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Strike-slip
- Moment magnitude
- 5.5 Mww
- Nodal plane 1
- Strike 236°, dip 68°, rake -169°
- Nodal plane 2
- Strike 142°, dip 79°, rake -22°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 6.5 km horizontally, 4.7 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 124°
- Stations used
- 102
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 12 since this one and 6 in the 30 days before it.
After
- 4.326 km WSW of Urakawa, Japan · 51 days ago · 72 km deep · 89 km away
- 4.364 km NE of Kuji, Japan · 49 days ago · 50 km deep · 87 km away
- 4.031 km E of Hachinohe, Japan · 46 days ago · 68 km deep · 97 km away
- 4.290 km ENE of Hachinohe, Japan · 43 days ago · 44 km deep · 66 km away
- 4.881 km SW of Urakawa, Japan · 42 days ago · 69 km deep · 34 km away
- 6.032 km SSW of Honchō, Japan · 30 days ago · 41 km deep · 90 km away · felt by 12
- 4.869 km NE of Kuji, Japan · 26 days ago · 59 km deep · 84 km away
- 4.634 km SSW of Shizunai-furukawachō, Japan · 26 days ago · 61 km deep · 82 km away
- 4.516 km SW of Urakawa, Japan · 24 days ago · 64 km deep · 97 km away
- 4.333 km S of Shizunai-furukawachō, Japan · 21 days ago · 66 km deep · 83 km away
- 4.675 km ENE of Mutsu, Japan · 21 days ago · 62 km deep · 30 km away
- 4.725 km N of Mutsu, Japan · 9 days ago · 120 km deep · 62 km away
Before
- 4.2110 km S of Honchō, Japan · 57 days ago · 45 km deep · 93 km away
- 4.146 km NNE of Mutsu, Japan · 59 days ago · 118 km deep · 55 km away
- 4.033 km E of Hachinohe, Japan · 74 days ago · 71 km deep · 91 km away
- 4.5100 km ENE of Misawa, Japan · 81 days ago · 56 km deep · 47 km away
- 4.339 km ENE of Hachinohe, Japan · 82 days ago · 63 km deep · 82 km away
- 4.670 km ENE of Hachinohe, Japan · 83 days ago · 56 km deep · 65 km away
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000thdk (also filed as usauto6000thdk). Read Tue, Sep 22, 2026, 6:53 PM UTC.